no
The flow of exhaust gasses
It improves the efficiency of the engine by allowing better exhaust out flow and intake in flow.
to put a bigger main jet, to put more gas to the engine. take the carburetor off. on the bottom are three screws you need to take off. then the carburetor comes in two. the biggest screw head at the top of the brass things, is the main jet. it comes out of the pilot jet, which comes out of the carb if you unscrew it. take out the main jet and put a bigger main jet in. you'll also want a free flow exhaust and free flow muffler.
It is where the carburetor controls the flow of air and fuel into the engine allowing it start up when the engine is cold. It does this automatically instead of having to do it yourself.
exhaust gas recirculation flow insuficient
They are in the exhaust flow
Gravity and vacuum. The air flow into the engine creates a vacuum that sucks the metered fuel from the carburetor into the intake manifold and from there through the intake valves into the combustion chamber where it is ignited by the spark plugs.
This sensor varifies flow of the exhaust gases to the intake manifold. If flow is interupted the sensor will inform the onboard computer that the exhaust recirculation system has failed resulting in a check engine light to come on.
a turbocharger uses exhaust gas to spin an impeller that boost atmospheric pressure and feeds it into engine
In the exhaust pipe, right next to the engine.
Does increasing the diameter of your exhaust pipe leading from the engine increase exhaust flow and therefore lessen engine burden causing an increase in horsepower? The answer for that is yes, but is negligible. Maybe 3-15 horsepower at best.
It depends on what engine you have but the 02 is in the exhaust pipe or exhaust manifold and the EGR is a round disc shaped thing on the rear of the engine.